Here's the dialogue:
Anakin: I've saved your life ten times!
Obi-Wan: You have been reckless. You have been arrogant. You have acted without thinking! And you have saved my life ten times because of it.
Anakin: What is that supposed to mean?
Obi-Wan: It means that the Jedi way is not about saving your own skin. The Jedi way is about fighting for what is right!
This is a key moment in the film where we see the growing tension between Anakin and Obi-Wan, and how their different views on the Jedi way are causing a divide between them.